Speedy Metals 3" x 1-1/2" x 1/4" 304 Stainless Steel Channel
Outwater Black Finish 3/4'' Inside Dimension Aluminum U-channel 48'' Length (pack Of 3) Alu447-bk C-channel in the Furniture Moulding department at Lowes.com
Hot Rolled Steel C Channel | Coremark Metals
3" X 1.41" X .170" X 8' Steel Channel | / Channel
Steel Channel | Structural A-36 C channel | Hamill Metals